3200。 According to the official source information of Xi 'an Heima School, Xi 'an Heima School has 3,200 students. Xi 'an, Chang 'an and Haojing for short, is a prefecture-level city under the jurisdiction of Shaanxi Province. It is the capital of Shaanxi Province, a sub-provincial city, a megacity, a national central city, the core area of xi metropolitan area and the core city of Guanzhong Plain urban agglomeration. It is an important central city in western China approved by the State Council and an important scientific research, education and industrial base of the country.